there are lot of youtube tutorials out there but I guess mahirap isipin kung saan talaga ung starting point noh? well, personally, what i can recommend is:
1. start learning if every string of your guitar is in tune, in that way mafeel mo na tama ung pinagaaralan mo, not just technically following guides.
2. start from chords that dont use bar or chords that makes u hold the whole fret bar like G, Em, C, D, A, etc.
3. when choosing what song to learn to play first, search for songs that only uses 2-3 max is 4 chord patterns. ex. Senti (A-D), chikinini/banal na aso santong kabayo(Em-C) etc. make sure its something na mabubuo mo, not just like u stopping midway kc mahirap na ung chorus, etc.
4. for strumming naman, you learn it eventually specially by feeling it, its like doing rythmic patterns, for me just strum downward once each chord lang para masanay ka sa time gaps ng paglilipat lipat ng chords, mahirap kc pag nag down up down up etc ka, kc mangyayari nyan naghahabol ka kc may strum ka na dedelay.
5. lastly, give ample time to learn to play guitar, music is an art, and you choose guitar as skill for that art, and skill is not an overnight thing, constantly it needs practice to hone that skills, also dont forget you have fun and make sure u enjoy doing/practice with it.
