1K$ in BTC definitely a good choice. I would personally invest 80% into BTC so 1.200$ instead of 1K. Bitcoin is and will be the king for really long time.

The rest equally in Ethereum, Binance Coin, Cardano, Monero and Dogecoin. Don't invest in anything that isn't in Top30, please. Some of them might go down but they'll come back up again as they managed over the years.

Three rules:

1 - Do NOT day-trade. Nobody knows what's gonna happen the next minute and most of traders are in red numbers.

2 - HODL. The best strategy is to buy and forget about it. If the price goes down, buy more. Withdraw ONLY if you can make profit! Bulletproof strategy.

3 - Not your keys, not your coin. Move your coin out of the exchange as soon as you can. It'll be easier to follow rules #1 & #2 and you really owns the coins. If you'll keep it in the exchange you own only "I owe you" tokens and you can lose all your coins if the exchange gets hacked. Read about "Mt. Gox" and BitFloor hacks, please.