The English Heritage Website has 48 pages of (keyword inserted was 'Prehistoric') free to read/download Pdf reports and booklets covering all aspects of archaeology and prehistory on their database, some fascinating reading, well worth a trawl through.
http://www.english-heritage.org.uk/publications/
Picked out several interesting ones from short booklets for the novice to more in depth reports for the 'old hands' so to speak.
Short 'introductions' Leaflets.
Religion and Ritual Pre 410AD
http://www.english-heritage.org.uk/publications/ dssg-religion-ritual/ritual-religious-pre-ad410-ssg.pdf
Prehistoric Linear Boundary Earthworks
https://www.english-heritage.org.uk/publications/iha-prehist-linear-boundary-earthworks/linearboundaryearthworks.pdf
Prehistoric Avenues ad Alignments
https://www.english-heritage.org.uk/publications/iha-prehistoric-avenues-alignments/prehistoricavenuesalignments.pdf
Prehistoric Henges and Circles
https://www.english-heritage.org.uk/publications/iha-prehistoric-henges-circles/prehistorichengesandcircles.pdf
PRE-INDUSTRIAL ROADS, TRACKWAYS AND CANALS
http://www.english-heritage.org.uk/publications/ iha-preindustrial-roads-trackways-canals/preindustrialroadstrackwayscanals.pdf
PREHISTORIC ROCK ART
http://www.english-heritage.org.uk/publications/ iha-prehistoric-rock-art/prehistoricrockart.pdf
SITES OF EARLY HUMAN ACTIVITY
http://www.english-heritage.org.uk/publications/ dssg-sites-early-human-activity/early-human-activity-ssg.pdf
Prehistoric and Romano-British Settlements with Structures.
http://www.english-heritage.org.uk/publications/ iha-prehistoric-romano-british-settlements-structures/prehistoricromanobritishsettlements.pdf
ENCLOSED PREHISTORIC SETTLEMENTS
http://www.english-heritage.org.uk/publications/ iha-enclosed-prehistoric-settlements/enclosedprehistoricsettlements.pdf
A few longer free PDf downloads...Some nice maps, diagrams and photos included.
A NEOLITHIC AND BRONZE AGE LANDSCAPE IN NORTHAMPTONSHIRE: VOLUME 1 – THE RAUNDS AREA PROJECT..
http://www.english-heritage.org.uk/publications/ neolithic-and-bronze-age-landscape/
Plus supplementary volume
http://www.english-heritage.org.uk/publications/ neolithic-and-bronze-age-landscape-vol2/
An Archaeological Aerial Survey in the Cotswold Hills:
A Report for the National Mapping Programme
http://www.english-heritage.org.uk/publications/ archaeological-aerial-survey-cotswold-hills-nmp/4755_Cotswold_Hills_NMP_Report.pdf
I'm sure this will cause a few 'discussions' ;)
STONEHENGE TEACHER'S KIT
http://www.english-heritage.org.uk/publications/ stonehenge-teachers-kit/
A few odds and ends from The National Mapping Programme.
South Dorset Ridgeway Mapping Project
http://www.english-heritage.org.uk/publications/ nmp-south-dorset-ridgeway/South_Dorset_Ridgeway_NMP_web.pdf
Salisbury Plain Training Area
http://www.english-heritage.org.uk/publications/ salisbury-plain-training-area-nmp/SPTA_NMP_Report_web.pdf
The Archaeology of the
Suffolk Coast and Inter-tidal Zone
http://www.english-heritage.org.uk/publications/ suffolk-coast-nmp/suffolk-coast-nmp-internal-report.pdf
THE WESSEX HILLFORTS PROJECT
http://www.english-heritage.org.uk/publications/ wessex-hillforts-project/
THE ARCHAEOLOGY OF NORFOLK’S COASTAL ZONE
http://www.english-heritage.org.uk/publications/ archaeology-norfolks-coastal-zone-nmp/
PATHWAYS TO EUROPE'S LANDSCAPE
http://www.english-heritage.org.uk/publications/ pathways-to-europes-landscape/
Plus a few interesting stats about the cross section of visitors to Arbor Low and Gibb Hill in this small Pdf
http://www.arborlowenvironsproject.org/wp-content/uploads/2014/04/Arbor-Low-Visitor-Survey.pdf
And that's a tiny amount from just the first 11 pages. Won't have to buy any reading matter for a while that's for sure.
