I am a family solicitor. Whether you instruct a lawyer is up to you, but so far, you have admitted you have little grasp of pensions etc. Whatever person you spoke to (about debt) has either wildly misinformed you, or you have completely misunderstood them.
No one is liable to pay debts contracted by their spouse, either during marriage, or post separation. Debts of one party can (and generally are) taken into account in the settlement, but that is not the same thing as you being liable to the creditor for them.
I think if you choose not to instruct a solicitor, your husband will run rings around you, and leave you far worse off than you should be.
First port of call for finding a solicitor is personal recommendation. Ask around, people must know people who had good or bad experiences.
In addition, look on the Resolution website, find an accredited specialist in your area. In addition, the Law Society has a separate accreditation scheme, so Find A Solicitor can also flag up local solicitors who have passed this additional process.
Good luck.