Are the bass and baritone parts usually written in the bass cleff?

It's sometimes also called the F clef. x

yes

Depending on what your reading, there are baritone players that read bass clef and those who read treble they are known as Baritone B.C (Bass) & Baritone T.C (treble) ao the answer is normally...

this is very simple. The tab uses a series of 4 parralel line (for a 4 string bass)- each ine representing a string. The bottom line is the E string, top line is the G string (A and D in the middle)....

strings, mainframe, tuning keys and slide