Aracelly and Teesha - you'll find more conversation partners on the other forums. This one is more for asking grammar questions so I encourage you to use this forum to ask questions but if you're looking to talk to people and make friends try the "tell us about yourself" forum. http://www.eslgo.com/conversation/viewforum.php?f=23
Hi Teesha, visit Google.com and search for information regarding 'Articles' and 'Preposition'. Lots of resources are there you just have search for it. To practicing Preposition you must follow more and more examples because the use of Prepositions vary with the context of the sentences.