Assalamu alaykum,
I always have this dictionary tab open on my computer, it has several arabic-english and arabic-arabic dictionaries compiled onto one website. The top dictionary is Hans Wehr which is why I use it.
Sorry, it's a long link:
https://ejtaal.net/aa/#hw4=432,ll=1209,ls=5,la=1745,sg=455,ha=285,br=409,pr=68,aan=235,mgf=376,vi=174,kz=944,mr=276,mn=538,uqw=677,umr=441,ums=371,umj=316,ulq=839,uqa=165,uqq=132,bdw=h372,amr=h268,asb=h389,auh=h667,dhq=h224,mht=h359,msb=h99,tla=h54,amj=h303,ens=h415,mis=h390
As for verb conjugation, I don't know of any such book, but once you learn the ten word forms and their conjugations, you will just keep applying that to every verb you learn in sha Allah.
I hope this helps,
Shazia Ahmad