This thaicontracts.com website is useful about Thai contacts and has some easy to read Q&A as well as learning sessions:

www.thaicontracts.com/q-a-land-ownership-laws-for-foreigners.html

The section on  consequences of marriage only covers the legal aspects though not all the other impacts on your life 

Learning1: Q & A Thailand land laws for foreigners

www.thaicontracts.com/q-a-land-ownership-laws-for-foreigners.html

Learning2: Q & A condominium and foreign ownership in Thailand
www.thaicontracts.com/q-and-a-condominium.html

Learning3: knowledge and practical thai legal information
, Condominium Apartment payment terms
, including sections on:
www.thaicontracts.com/articles.html
-contract terms for a resale unit in Thailand
-buying off plan
-condo conveyance tax
-condo laws and foreign ownership
-family law
-foreign currency exchange form
...
-investing in real estate


Learning4: Condominium Law (Thailand)
www.thaicontracts.com/miscellaneous-content.html

Learing5: Rent of Property laws in Thailand
www.thaicontracts.com/q-and-a-lease-in-thailand.html

Learning6: Legal aspects and consequences of marriage in Thailand
www.thaicontracts.com/learning-6.html

Learning7: Foreign business and Company
www.thaicontracts.com/learning-7.html

Learning8: Laws in Thailand 
www.thaicontracts.com/laws-in-thailand.html