This. Also, you don't need to use compound conjugations at first. This might be wrong for the Spanish Iberian dialects the same way it's a bit wrong too in English, but if you don't say "I've just eat" instead of "I ate" everyone will understand you fine.
In a language with articles, you can do mistakes in conjugation, yet if you use the article people will understand what/who is the subject and still understand.
When you learn a language, focus on present tense. By using words like before/after/yesterday/tomorrow you can keep using present tense and be understood by a native speaker and you are likely to learn quickly the past and present tense by listening to their answers. People usually understand that you are learning and don't mind you using present tense.