I try to keep an open calendar, but it's always good to drop me an email beforehand, and I'll set up a time to meet with you.
Email is by far the best way to get touch of me, as I'm more likely to pick up an email than answering a phone call. My email address is below. If you use PGP, feel free to send an encrypted email to me, and I'll get back in touch. My PGP key is below.
My PGP Key is here
PGP Key ID: 939A6732
PGP Fingerprint: 547C CDB1 AB9E E697 49FE 2515 05D4 E7F7 939A 6732