Holding down shift will allow you to make a selection of files with a starting point and the last picture you want selected. If you hold cntrl, you can select each individual picture you want. If it's for this site, you'll only be able to upload up to six photos at a time.
Hold CTRL and select picture using mouse. Just hold the CTRL key until your not finish selecting.
Um, hold down the shift key then you use your arrow keys to select the ones you want
That didn't work wither. Hmm, idk why.
Or you can use CTRL+A to select all.
That didn't work.