How to start investing at 18 years old

array(3) { [0]=> object(stdClass)#5673 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "LTEbZffe_qA" ["related_video_title"]=> string(62) "Martin Lewis Explains the Best Way to Invest Money in Your 20s" ["posted_time"]=> string(25) "3 месяца назад" ["channelName"]=> string(20) "Good Morning Britain" } [1]=> object(stdClass)#5646 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "PCWkebBVyPY" ["related_video_title"]=> string(32) "How to Invest Your First $1,000!" ["posted_time"]=> string(27) "8 месяцев назад" ["channelName"]=> string(13) "Humphrey Yang" } [2]=> object(stdClass)#5671 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "wQCRZlbLgY4" ["related_video_title"]=> string(19) "Будущее ИИ" ["posted_time"]=> string(21) "2 года назад" ["channelName"]=> string(7) "GaryVee" } }