you can open your rrsp with anyone of the big six banks, even trust companies, however, you can only buy mutual funds, GIC or savings bonds with them, all bank branches have financial planners, if you have lots of money, they will also refer you to investment advisors or full service brokers.
alternatively, you can also open an rrsp account with any of the discount brokers, the account with them will also allow you to invest in stocks, bonds and even options as well as the three mentioned above. if open you account with the discount brokers, you have to have some basic investment knowledges since they are self managed, also there will be an annual admin fees if your pofolio is below a certain amount.
due your researches, one way of it is by visiting their websites.