First and foremost: if you use a credit/debit card or an e-wallet, make sure it has enough real money, so it will clear the transfer. If this is your first time using an online casino, check if there are limits to the deposits. You may try making a smaller deposit first, so you’ll see how it works. If you encounter any problem during this process, contact support. The best casinos have 24/7 customer support departments, which will answer any of your questions and assist you during the process.