Below on this page is one of the most detailed map of Thailand I could find.
When you click on the link you will be taken to a page where you can enlarge the map.
If you plan on travelling in Thailand (especially by car) you may want to buy a detailed road map of Thailand.
You can find a good one at 150 baht.
Or if you have a smart phone you can get a 3G sim card with DTAC.
Any convenience store has them.
The setup and sim card won't cost more than 500 baht.
You'll be able to find your way as you move around.
See also "driving in Pattaya" -even though it's about driving in Pattaya it will give you a very good idea about what to expect when driving in the Kingdom.
Below is a link to a very nice Map of Thailand. When you click on the link it will open in a new window and you will be able to enlarge the map below.
How will you be going around the Kingdom? Do you plan on renting a car or buying a bicycle? Whatever you choose on doing know that you have different options. Just be sure you have a Thai driver's license if you're planning on driving a car.
You can also take a bus to many different parts of the Kingdom. For example - prices and where to go for taking a bus from Bangkok to Pattaya are similar and just as convenient.
Again you can get maps at any convenience store with English words. You might not be so luck with the road signs though!
In any case have a great time in the Kingdom and remember to travel safe!
Tourist Information Thailand
TAT Offices in Thailand
Check out this detailed map of Pattaya