It a general form, but simply and good. Okay, more introduce-form show I for you, let's go:
Mein Name lautet nanashi1 (or your name); Ich heiße nanashi1 (or your name)...etc.
And description option of weather so:
Ein herrlicher Tag/Wetter; Ein unbeschreiblicher schönes Tag/Wetter haben wir...etc.
And what I'm are...:
Ich bin 24/vierundzwanzig (or your old) Jahre alt - I'm 24 year old...
Lebe/Wohne in Ungarn (or your country) - I'm living in Hungary...
Bin Koch von Beruf (or your status) - I cook by profession.
Meine Hobbys sind: Animes, Manga, Visual- sowie Light-Novel (or your hobby)...usw. - My hobby are: (...)...etc.
Lot more later, okay? Then bye~!