First time

Dia Dhuit,
Timothy is ainm dom. Tá áthas orm buaileadh leat. Is banaltra mé agus is as Meiriceá dom.
go raibh maith agat,

Slán go fóill.

I am interested in speaking with others to better my skill with Irish. Also, I do not yet know how to place the accent marks over letters.

"Banaltra" is technically a female nurse (the prefix "ban" signifies a female) though the term sometimes seems to get used indiscriminately for both males and females. The proper term for a male nurse is "altra fir" and the gender-neutral term is "altra".

You can find some advice on typing accents here:

http://www.smo.uhi.ac.uk/~oduibhin/mearchlar/windows.htm

http://www.smo.uhi.ac.uk/gaidhlig/sracan/english.html