Merhaba.

I have 3 questions that I want you guys to answer,

1. Do you guys I can learn turkish from just taking lessons on here? 

2. Do you think I should get courses?

3. Do you think if I get educational turkish books it will be helpful?

1. yes yes yes; you can take a look not only at lessons, read all posst from turkish translations, practice turkish, etc.

2. depends on your  free time and money; but if you study every day at least 30 minutes you will succeed; you have to listen turkish daily: music, movies, e-books..

3. very helpful; there is a list here, posted by ikicihan ()

good luck