medlycott wrote:My question is is there any benefit of having both courses?
When you say "both courses" I presume you mean a TEFL course AND a CELTA course. Unfortunately that is a non-question
because a CELTA IS
a TEFL, one of many TEFL courses and generally regarded as one of the best if not THE best. So no, you don't need "both courses". And you couldn't do better than getting a CELTA. You may like to read our FAQ to clear up any misunderstandings:http://www.tefl.net/tefl-courses/faq.htm
Note that a university degree is often cited as a prerequisite to doing a CELTA, but this is not always true so it's still worth looking around.
medlycott wrote:Are there any other short training courses that could benefit me finding that first job and help a newbie teacher without a degree?
Nothing that would be better than a CELTA.
medlycott wrote:I want to work and explore SE Asia especially Thailand.
You may run into problems if you want to teach in Thailand without a degree because it's one of the countries that require a degree to get a work permit. You may do better to look elsewhere, including the EU (assuming you are British since that means you have the right to work in most EU countries regardless) or South America.