Frontman's a great deal
There's so many little practice amps these days that are a great bang for buck.
The Frontman is one I really like, plenty of power, decent features (like mp3 hookup), both dirt and cleans are excellent and there's no tubes to fuss about. A respected and proven amp (read the reviews):
Want something a little further plus a jamming companion try the G-dec 15 (or 30 if you want more watts). Tons of tones, effects, USB hookup so you can download jam tracks and lots of great features. http://www.sweetwater.com/store/detail/GDEC3-15/
It's 3 times as much as your 100$ frontman but I just wanted to give you options.
Like I said, there's a lot and I'm sure others will chime in. BTW, Don't let anyone tell you it HAS to have tubes because it just ain't true.
Practice + experience = tone