It’s a good business habit to read everything before signing a document. This makes you more familiar with what’s expected from you and what you expect fro the condo corporation.
Although to some, reading it may be a chore, especially if you’re uber excited in owning the unit. For example, if you see “no pets” or “no one under the age of 18”, but you have a pet Python and a month-old child, then the condo unit is just not for you.
If the document has a lot of legal stuff in it, please consult your lawyer, or (better still) a condominium consultant. He or she knows a lot of how these bylaws can be translated to layman English.