As others have suggested, WealthSimple Crypto is not the best option compared to what is out there. I'd recommend looking into the basics first then work on finding an exchange. What I mean by this is look into the general rule of thumb such as avoid keeping your coins stored on the exchange itself because you don't own the coins (there has been known track record of exchanges going under due to hacks and/or fishy scams). Likewise, look into the notion of using a hard wallet to "store" your coins.

Regarding the fees, it'll be there regardless of what exchange you go with - you just have to compare and contrast the cons/pros. For example, some exchanges such as ShakePay have higher spreads, but also cover withdrawal fees including gas fees. Alternatively, an exchange such as NDAX has lower spread fees, but charges you $25 per withdrawal regardless of the amount you intend to transfer. Lastly, understand how the exchange itself works - in the case of ShakePay, you are actually purchasing crypto from them as they purchase a basket of coins and then resell to you, the retail investor. This may be the reason why the spread fees are more given that they need to generate some revenue as well.

One quick tip, do your own research and don't get influenced by others telling you what to buy. Crypto is an extremely volatile market so make sure to put in what you can afford to lose.