**What are Walking Dead cards, and what types or series are available for collectors?
How can a beginner start collecting Walking Dead cards, and what are some tips for building a valuable collection?
Are there any rare or limited edition Walking Dead cards that are highly sought after by collectors?
What special features or inserts, such as autographs or costume pieces, can be found in Walking Dead card packs?
How do Walking Dead cards typically appreciate in value, and what factors influence their market price?
What are the different types or series of Walking Dead trading cards available, and how do they differ from one another?