Can I Ask How You Memorize Solubility Rules? I Learned It Way Back In 121, But Didn't Really Use It For

can i ask how you memorize solubility rules? i learned it way back in 121, but didn't really use it for 122 and now that it's the end of the semester, everything's kind of hazy. we're at Ksp and quantitative analysis so it's becoming important again and i could use help refreshing myself!

Wikihow actually has a really easy way of memorizing the solubility rules with acronyms “NAG SAG”, “PMS”, and “Castro Bear”  which stand for the soluble compounds and exceptions to those rules.

N: Nitrates = soluble with anything A: Acetates = soluble with anythingG: Group 1 elements = soluble with anythingS: Sulfates = soluble with some compoundsA: Ammonium ion = soluble with anythingG: Group 17 elements (the Halogens) = soluble with some compounds

P: (Pb) LeadM: MercuryS: Silver 

All the “PMS” ions are not soluble with group 17 elements or sulfates Ca: CalciumStro: StrontiumBear: Barium  and all the “Castro Bear” ions aren’t soluble with sulfates. 

Also:

Carbonates, Chromates, and Phosphates are insoluble with all compounds except for Group 1′s and the Ammonium ion

Hydroxides are insoluble with all compounds except for Group 1′s, the Ammonium ion and “Castro Bear” ions