You have three choices: 1. Pay someone to teach you this stuff. http://www.italki.com/teachers/professional 2. Study from a book or website. 3. Find a language partner. http://www.italki.com/partners

～して would be the te-form for all the verbs that end in ～す, such as はなす、わたす、うつす, etc. The te-form has a good bunch of uses, so you need to provide further context. I suggest you to learn from these two websites: http://dev.jgram.org/pages/viewList.php?lv=4 http://www.guidetojapanese.org/learn/grammar

I can say that, "-shita" means always past and its basic form is "desu" and "masu". ＊私はパンを食べました。= watashi ha pan wo tabe mashita.= I ate bread. ＊私は写真を見ました。= watashi ha shashin wo mi mashita.= I saw the picture. ＊あれは犬でした。= are ha inu deshita.= That was a dog. and "shou" Its basic form is "desu" or "masu" + "u (auxiliary verb and guess)". ＊食べましょう。= tabe mashou.= Let's eat. ＊行きましょう。= iki mashou.= Let's go. ＊明日は晴れるでしょう。= ashita ha hareru deshou.= It would(will) be sunny tomorrow. sorry, about "shite", I need some examples.