No doubt, one of the moderators will be around to tell you about our attitude to sloppy punctuation.
- I'd just like to mention that, in English unlike in Spanish, we don't join two sentences with a comma. This is a no-no. There are various ways around it.
- Always capitalise 'I'.
- Use only one question mark for one question; same applies for exclamation marks.
Your question is too large to answer simply in a forum. Do you go to English classes? Do you know any native speakers who you could talk to regularly? Are you studying English at home on your own?