before you invest ico you should read some explanation about ico that you will follow. see how many people are investing in the ico. if only a few follow the ico you should not follow the ico because of the possibility of the coin will fail in the future. a lot of ico that failed and many also successful. if you want to invest in ico .. you can use bitcoin to buy the coins. usually at a cheap price. not just eth bitcoin you can also use to buy the coins. you just create your wallet account then buy the coin. then save it