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I don't know of a specific tutorial that walks through the various cases with examples.  There are some videos online regarding Load link/Store conditional (LL/SC), which is the name for what LDREX/STREX (or LDXR/STXR if you speak ARMv8) provide.  Those videos talk in general principles.  There's some architecture course material online as well.

If you want more concrete implementation details, you can look at real-world implementations and how they map onto architecture specifications.  For example:

I don't know of a specific tutorial that walks through the various cases with examples.  There are some videos online regarding Load link/Store conditional (LL/SC), which is the name for what LDREX/STREX (or LDXR/STXR if you speak ARMv8) provide.  Those videos talk in general principles.  There's some architecture course material online as well.

If you want more concrete implementation details, you can look at real-world implementations and how they map onto architecture specifications.  For example: