The wee 5 is a grace note, you play it quickly and quieter, or barely, it sort of transitions quickly into the A (the 7).
The dot means staccato, or play it very quick and end it abruptly.
The smaller 5 on the D string is a grace note. Rhythmically, it has no value. You play it very quickly just prior to the second beat in this measure (think: like a whisper).
The dot over the 7 on the A string is a staccato symbol for that note, or very short/pointed attack.