A Glock is your Toyota Tacoma of handguns. Reliable. Lots of parts. Easy to work on. Goes 'bang' when you press the gas. No frills, unless you want them.
19/2011's are always popular if you want to spend money. Sig's I can't endorse, just like Barretta because of high parallax. That's just my preference or lack thereof.
I recommended a Glock 17 to my dad because he's not experienced with guns, and I mention this because you said you're not experienced with semi-autos. There's really nothing complex to manipulate with a Glock so you can develop a focus on safety and aim, whereas with a 19/2011 you'll have to worry about the manual safety, hammer position, and possibly carrying with one in the chamber alongside all those things. If you have larger hands, a G17 or at least a permutation of a Glock with a G17 full-size lower would be my recommendation. Once you've got the whole inserting/dropping the mag, racking/releasing the slide, you've got the baseline for any semi-auto, and from there, you'd just have to worry about manual safety's and hammers in guns that have them.