Stash
Stash is great. They have an awesome community that is willing to help beginner investors build their portfolios and learn about investing. You can buy fractional shares down to the pennies. They also offer managed portfolios in case you don't want to do any of it yourself. You can even start investing for your children or saving for your retirement. If you are looking for a simple, beginner platform to start investing on, and don't want to manage it yourself.
Stash is one of the best places you can turn to. No real need to look at technical charts, you can set up auto deposits, They offer lots of great incentives like Stash parties where you can get free fractional shares of companies to diversify your portfolio. These stash parties only give out 15 cents worth of stocks, but if you are just starting out and want to see what investing is like, it gives you great idea's for companies to put a few dollars into.
If you want to find out more, use my link, and we both get 20$ when you add cash and make your first investment!
Stash