Published 1821 (this version) I think there were earlier ones.

Be as wise as serpents, and as harmless as doves.

AT GOOGLE BOOKS – full view – and available for download.

This is a quite fascinating book -and I love the idea that a parent would buy their son this book, shove it into his hands and probably consider that was their responsibility dealt with.

Here’s the contents. I don’t even know what some of this stuff MEANS.

Directions for Epistolary Correspondence…
Reduction of Decimal Fractions
Religion and Religious Sects
Behaviour and Manners
Heraldic Terms and English
Useful Receipts in Art
Miscellaneous Articles
I’m quite sure that there’s a wealth of inspiration to be found! Enjoy!
I was alerted to the book on the Inkspinners group, where one of the members, Joanna Waugh, converted some of the purchases to today’s money.  She says:

I took some time today and converted a few of the prices Kat shared with us from A Young Man’s Companion. I had to use 1830 values and a conversion date of 2008, but it still gives us an idea of the relative value of these items today. If I made any mistakes in the calculations, I apologize. I rechecked them before posting but I was never very good at math!

2 dozen of men’s 2-thread alted thread stockings…2. 8.0

£182.26/$338.02 or £7.60/$14.08 a pair

2 dozen of ditto 3-thread fine marble ditto… 4. 4.0

£318.95/$591.52 of £13.30/$24.65 a pair

9 six-thread superfine breeches, at 10s6d… 4.14.6

£358.82/$665.47 or approx £40/$74 a pair

6 four-thread superfine ditto, at 7s 6d…. 2. 5.0

£170.86/$316.88 or £28.48/$13.20 a pair

6 pair of silk ribbed stockings, stout at 14s… 4. 4.0

£318.95/$591.52 or £53.16/$98.59 a pair

6 pair of spun silk stockings at 5s6d…. 1.13

£125.30/$232.38 or £20.88/$38.73 a pair

15 yards of flowered ribband, at 2s…. 1.10.0

£113. 91/$211.26 or £7.59/$14.08 a yard

2 pair of chicken gloves, at 7s. 6d…. 0.15.0

£56.96/$105.64 or £28.48/$52.82 a pair

4 pair of fine lamb ditto, at 2s. 4d….. 0. 7.0

£26.58/$49.30 or £6.65/$12.33 a pair

2 fans, French mounts at 3s. 6d. …. 0. 7.0

£26.58/$49.30 or £13.29/$24.65 per fan

6 yards of Mechlin lace, at 12s …. 3.12.0

£273.38/$507.01 or £45.56/$84.50 per yard

1 Gauze cap and trimmings ….. 1. 2.0