Verb conjugation of "yacer" in Spanish

I know it is a little confusing. The problem is if the original word is a conjugated verb: I skipped them until now. I did not write it in my explanations. It actually must be skipped. Thanks for noticing.
Vocabulix includes a vocabulary builder for many languages, Spanish and German are just the ones that have the predefined sections. Generally speaking you can invent your own set of expressions and drill them on the speed train.
That's a great deal. I know that in the beginning it is difficult to have conversations, especially if you're not stable with vocabulary. Actually, your English does not seem so bad. Have you ever taken a course?