I suggest that you follow a basic course at the beginning, and not worry about the past and future for now (until you study them in a course), because otherwise it is too much. Focus on the present tense at the beginning, and follow a beginner's course - so you will learn little by little without difficulty. For the verb to be you just leave the verb out. For example "He is nice" becomes "He nice" Hu nechmad הוא נחמד