Please check your answers below:
1. Well, its easy to get survival job (if you mean that) in winter. Because, during summer colleges and universities remain closed and students are on summer vacation. So, there is a huge no of applicants during summer. But, it all depends where you are staying. And, if you mean professional jo0b, then there is no summer or winter, you have to apply and wait and hope that some of them give you a call.
2. you can buy laptops from Bangladesh. Its not a big deal.
3. Dont buy any heavy winter cloths or shoes from Bangladesh. Not a single one of them will work. You can bring your existing winter cloths. But, dont buy anything from Bongobazar or somewhere elese. These cloths will not work if its snowing.
4. No way to transfer fund. You have to carry by yourself.
5. All banks are good. TD, Scotia Bank, RBC. You can check the new to canada offer and find out which one is most attractive and then you can select. I selected TD when i came in. And, i dont know what insurance you are speaking about. Because, you dont need any insurance unless you are buying a car. There is rental insurance required in some cities but the amount is really low, like 15 - 20 CAD per month and most of the insurance companies offer the same. And, if you are speaking about temporary medical insurance, then i have no idea. Because, i didn't take any. Unless there is a really sick person in your family, i think you will not need that.
Hope this helps.
Thanks
Debashish