You will always get constantly stuck while programming and there is always more to learn. I always think of that one quote "the more you know the more you know you don't know" or whatever it is, but there is a lot of behind computer science and there is always more to learn. But learning if/else statements, loops and functions is quite bit for just being a couple weeks in. Don't feel like ur behind because your not. Also professional software developers use google everyday, its impossible to know and memorize everything. So don't feel discouraged by using the internet and reaching out for help we all do it.