If you chose number one you have to take some steps for keep safe your bitcoin.
1. Take a very heard password.
2. Keep your password in a very secure place.
3. Don't save your password in online.
4. Activate two step authentication.
5. Don't share your password to any one.
For your help give some trusted wallet links...
1.
https://www.coinbase.com2.
https://www.coinpayments.net3.
https://www.blockchain.comFor online wallet, I want to suggest some additional suggestions :
Avoid Phising Websites :
Keep on eye, url you enter on Browser Apps, such as Chrome or Firefox. You must bookmark the original website url. If you choose coin base, find out it's url, and bookmark it. Sometimes when we tired, we can focus on the url that we type on Browser. So, We better use bookmark feature to avoid Phising sites.
Keep Update Your Anti Virus Apps
If our browser apps contain virus, it's can modify url. Then we see coinbase.com, it's can bring us to another url. Virus can manipulate those coinbase.com url.