I know your "pain". But don't worry about investing the money right now -- leave it uninvested in the short term. You have other stuff you need to school up on. Investment will come, and it's not that hard.
Taxes and government
In the short term, focus on taxes. Do some "mock" run-throughs of your expected end-of-year taxes (use last year's forms if this year's aren't available yet).
Must you pay estimated tax periodically throughout the year? The tax authorities charge hefty penalties for "forgetting" to do it or "not knowing you have to".
Keep an eye out for any other government gotchas.
Retirement
Do not overlook this! This is the best investment you could possibly make. Max out your government sanctioned retirement funds - in the US we have employer plans like 401K or Keogh, and personal plans like the IRA. This is fairly straightforward. Avoid any "products" the financial advisors want to sell you, like annuities.
Also if you have the Roth type IRA, learn the difference between that and a normal one. There are some tricks you can do if you expect to have an "off" year in the future.
Don't forget charities
Charitable giving is worth considering at high income levels. Do not donate directly to charities. Instead, use a Donor Advised Fund. It is a charity of its own, which accepts your tax deductible donation, and holds it. You take the tax deduction that year. Then later, when the spirit moves, tell your DAF to donate to the charity of your choice.
This eliminates most of the headaches associated with giving. You don't get on the soft-hearted sucker lists, because you tell the DAF not to disclose your address, phone or email. You don't need the charity's acknowledgement letter for your taxes, since your donation was actually to the DAF. It shuts down scams and non-charities, since the DAF confirms their nonprofit status and sends the check to their official address only. (This also bypasses those evil for-profit "fundraising companies".)
How to invest: If you don't understand it, don't buy it.
It's a lot simpler than they want you to know. So-called "financial advisors" are actually salesmen working on commission. They urge you to invest, because that's what they sell. They sell financial products you can't understand because they are intentionally unduly complex, specifically to confuse you. They are trying to psych you into believing all investments are too complex to understand, so you'll give up and "just trust them".
Simple investments exist. They actually perform better since they aren't burdened down with overhead and internal complexity. Follow this rule: If you don't understand a financial product, don't buy it.
But seriously, do commit and take the time to learn investment. You are the best friend your money will have - or its worst enemy.
Learning investment
The only way to protect your money from inflation or financial salesmen is to understand investment yourself. You can have a successful understanding of how to invest from 1 or 2 books. (Certainly not everything; those ingenious salesmen keep making the financial world more complicated, but you don't need any of that junk.)
For instance how do you allocate domestic stocks, foreign stocks, bonds, etc. in an IRA if you're under 40? Well... how do smaller universities invest their endowments? They all want the same thing you do. If you look into it, you'll find they all invest about the same. And that's quite similar to the asset mix Suze Orman recommends for young people's IRAs. See? Not that complicated. Then take the time to learn why. It isn't stupid easy, but it is learnable.
For someone in your tier of income, I recommend Suze Orman's books. I know that some people don't like her, but that segues into a big problem you'll run into:
People have very strong feelings about money. Intense, irrational emotions. People get it from their parents or they get sucked into the "trust trap" I mentioned with so-called financial advisors. They bet their whole savings on whatever they're doing, and their ego is very involved. When they push you toward their salesman or his variable annuity, they want you to agree they invested well. So you kinda have to keep your head low, not listen too much to friends/family, and do your research for yourself.
John Bogle's book on mutual funds is a must-read for picking mutual funds and allocating assets.
Better advisors
Certain financial advisors are OK. They are "fee only" advisors. They deal with all their customers on a fee-only basis, and are not connected to a company which sells financial products. They will be happy for you to keep your money in your account at your discount brokerage, and do your own trading on asset types (not brands) they recommend. They don't need your password.
Here's what not to do: A good friend strongly recommended his financial advisor. In the interview, I said I wanted a fee-only advisor, and he agreed to charge me $2000 flat rate. Later, I figured out he normally works on commissions, because he was selling me the exact same products he'd sell to a commission (free advice) customer, and they were terrible products of course. I fired him fast.
