Where/how to buy/sell?

I have a mutual fund that I have been putting a small amount of money into over the past 1.5 years. The transaction happens automatically every month and was setup through a financial planner that I was using at the time because I didn't know where to start. Because of this, I lose a small amount of the investment every month to fees, maybe something like 1%. I am looking to reduce or eliminate this loss. I may also be looking to buy individual stocks which the financial planner doesn't do.

I have looked at a few different online trading sites, but never really got a good feel for any of them. How is everyone else here buying and selling?

Any source