The official language spoken in Thailand is Thai, otherwise known as Siamese, but you'll hear plenty of locals speaking fluent English.
Thai Baht (THB).
100 Thai Baht is approximately £2.30
UTC +07:00, making Bangkok 7 hours ahead of London.
A bottle of local Thai beer from a café or shop can cost as little as 40THB (around £1). A Sangsom and soda bucket can cost between 124THB (about £3) to 300THB (about £7) depending on where you find it, and are so strong they're best shared!
Thai street food can cost as little as 50THB (just over £1) and can be every bit as delicious, if not better, than in some restaurants. For a sit-down meal somewhere midrange, expect to pay between 150THB (£3.50) to 300TBH (£7).
A basic dorm bed in Bangkok can coast you as little as 125THB (about £3); expect to pay double on the Southern Islands such as Koh Phangan, especially if you're staying there over Full Moon.
For a mid-range room for two people in a hotel or guesthouse, you'll pay upwards of £10. Fancier hotels can cost around £25-40. Book in advance with STA Travel to bag the cheapest rates; we always have awesome Thailand accomodation on offer!
Taxis cost around 5TBH (15p) per kilometre, after the initial surcharge. A 10km ride should cost you under 150THB (£3.50), and from the airport to Khao San Road, expect to pay between 350-530THB (£8-12.50). Always ask for the meter to switched on; it's fun to haggle a price before you start the journey, and you'll get a better price.
A 10 hour bus journey from Bangkok to Chiang Mai on a pretty comfy sleeper coach costs around 500-600THB (or anywhere between £10-15). A 12-15 hour bus journey from Bangkok to Phuket costs 1000THB (just over £20). Boat trips between islands cost around 500THB (£10).
Another popular way for backpackers to see more of Thailand than 30 days would allow, is to see some of the country, then visit neighbouring Cambodia, Laos, Myanmar, Vietnam or Malaysia too, before looping back into Thailand for your flight home, seeing more on the way!