Greetings all!

In May I'll be in Barcelona for a few days on a business trip and to attend a conference, and I'm thinking of extending my presence to spend a Friday night in one of the clubs in the city.

I've never been to a club but it's an experience I'd like to have, but I have a few questions I'd like to ask someone local, and I thank in advance anyone who would like to answer and give me advice!

I also wouldn't mind getting in touch with someone local!

These are my questions:

• First of all: Which clubs do you recommend I go to? Consider that I will be alone: would that be a problem? (for what it's worth: I'm M, 36 years old, straight, and I'm fit)
• I don't speak Spanish (well, just very little): is that a problem?
• Dress code?
• Very very important: how much is it safe for STDs?
• Last thing: is anonymity protected?

Thanks to anyone who will help me, you can answer here or contact me in private if you prefer.