I lived in Belize last year and took the bus all the time. I don't remember how often it leaves but pretty often like once an hour or something like that and the Express bus leaves about 3 times a day (anyone can feel free to correct me if i'm wrong!) From san ignacio you'll bus to Belmopan where you'll just stay on the bus for a few minutes while the people from belmo get on (you won't have to get off).It costs about 5$ belize dollars regular and $10 bz Express. That is just an estimate... but it is very inexpensive! The express bus goes straight there and the regular stops at every village. they are old school buses and charter buses sent down from the states. once you get to the belize bus stop then there will be lots of guys waiting out front offering a taxi ride. Just go with whoever because its all the same price. last time i was there it was around 6$bz but it could've gone up. Its a great way to meet people, get to know the local people of Belize and see the countryside. Its all very easy and self explanatory, just get your people from the resort to drive you to the bus terminal. Make sure you take some time to explore san ignacio because its pretty cool too! As an 18 year old girl from Canada i was able to travel belize no problem on my own without any planning or a lonely planet so all i'm saying is don't worry, relax and enjoy your trip. Everything's english and don't be afraid to ask for directions while you there. Have a merry Christmas and I wish i was in your shoes... I miss Belize SO much!