When I was studying Linguistics back in the mid-1980ies, Swahili was actually one of the languages we looked at in more detail. It is very different from the Indo-European languages such as Swedish and English in terms of morphology. I remember I found it very tricky indeed, and I’m sorry to say that I don’t remember much of it. But I’m looking forward to get acquainted again!
Some useful phrases to start with:
Jambo – Hello/Good day
Ulale salama – Good night
Ahsante sana – Thank you very much
Naweza kupiga picha? – May I take photographs?
Nimependezwa sana – I have enjoyed myself very much
Natumaini tutaonana tena – I hope to see you again soon
Here you can find some guides to phrases and words in Swahili: