Hi Jan.
Like abadio says a mic is always a personal thing.But I think that if this is your first mic, I would personally go for the SM57.
It is a dynamic mic, and this mics are (like abaudio says) robust, they need no extra power, and it is not to expensive.
Like Mike say you have the worlds most used vocal mic, and countless hits have been made with SM57.
If this mic is good enough for the professionals it should not be to far of as a starter mic ?.
A pop screen is not to expensive, but like Mike say you can easilly make one from a piece of wire and nylon stocking (The hazardous part is to take your girlfriends nylonstocking)
There are also cheap rubber foam pop "pop screens" you can place directly on the mic. They will take away a little breath noice and sibilance. To my upinion the wire popper screen is a better solution.

Best regards
Tono