Yes, please! This is proper massage etiquette. No one likes to smell other people's funk, especially not your massage therapist.
Upon arrival you will be asked to fill out a client intake form about your medical history, areas that need addressed, and any medications you are currently taking so the therapist can adapt the session to your specific needs without doing any harm.
You should undress to the level you are comfortable. For a full body massage, most get completely undressed. You will always be under a sheet and blanket. The only area of your body being exposed will be the area being worked on at the time(arm, back, leg, etc...). However, if you will be more comfortable during the session if you leave your underwear on, that's fine. The therapist will work around the clothes you left on as best as he can. This does make working on the lower back and gluteal region a bit more difficult. If removing all your clothes makes you too nervous and unable to relax, then you are not goint to get the optimal benefit from the massage session.
Your massage therapist will give you privacy to undress and get comfortable on the table and under the sheet/blanket before entering the room for your session.
"Some is better than none."
What does that mean? Well, it varies from person to person. If you are just looking for some occasional relaxation, then a session every 3-6 weeks may be fine for you.
However, if you are looking to address a specific condition, then it is recommended to go more frequently at first and then slowly taper down to a maintenance schedule. Frequency of sessions should be discussed with your massage therapist after your treatment when he/she has a better hands-on understanding of your particular muscular issues.
Sure, if you'd like to talk go right ahead. The important thing to remember is that this treatment is all about you relaxing and enjoying the experience. In many instances, people may feel more relaxed starting off talking, and as the massage progresses, enter quiet states of relaxation.
The important issue here is that there are times when you need to speak up. If the therapist is doing anything to make you uncomfortable, you should let him know immediately. Also, let him know if you get too warm or too cold, if the room is too bright, or if the pressure needs to be changed (lighter or deeper). If something is not working for you - speak up! It's OK!
No. However, tips are industry standard for massage therapists. Common tips for a 60 minute massage range from $10-$20 and common tips for a 90 minute massage range from $20-$40.